diff --git a/gnu/packages/ruby.scm b/gnu/packages/ruby.scm
index baae553992..f7b0903478 100644
--- a/gnu/packages/ruby.scm
+++ b/gnu/packages/ruby.scm
@@ -123,6 +123,7 @@ a focus on simplicity and productivity.")
 
 (define-public ruby-2.2
   (package (inherit ruby)
+    (replacement #f)
     (version "2.2.6")
     (source
      (origin
@@ -136,6 +137,7 @@ a focus on simplicity and productivity.")
 
 (define-public ruby-2.1
   (package (inherit ruby)
+    (replacement #f)
     (version "2.1.10")
     (source
      (origin
@@ -169,6 +171,7 @@ a focus on simplicity and productivity.")
 
 (define-public ruby-1.8
   (package (inherit ruby)
+    (replacement #f)
     (version "1.8.7-p374")
     (source
      (origin